Window ventilator



April 3, 1951 w. w. WELCH, SR

WINDOW VENTILATOR 3 Sheets-Sheet 1 Filed Sept. 29, 1947 INVENTOR.

vW/ lfiM W WHCH 5P.

April 3, 1951 w, w, WELCH, SR 2,547,189

WINDOW VENTILATOR Filed Sept. 29, 1947 3 Sheets-Sheet 2 32 I JIE.5 6 F154 INVENTOR.

W/LL MM 14 W64 0/ 5E.

April 1951 w. w. WELCH, SR 2,547,189

'WINDOW VENTILATOR Filed Sept. 29, 1947 3 Sheets-She. 3

Patented Apr. 3, 1951 i UNITED STATES PATENT OFFICE R WINDOW VENTILATOR William W. Welch, Sr., Cincinnati, Ohio Application September 29,1947, Serial No. 773,650

. 1 This invention relates to a window ventilator and more particularly to a window ventilator thatmay be removably mounted in a window opening, although not necessarily so limited. -The disclosure herein is an improvement upon the disclosure in my application Serial No.

13 Claims. (01. 98-94) 516,858, filed January 3, 1944 for Pl%tic Ventilator Fan, now Patent 2,441,737.

7 An object of this invention is to provide a window ventilator having a plurality of planetary hoops functioning as a guard and as a housing,

some of the hoops being located on the inside of the window opening and other hoops on the outside of the window opening. the hoops being so designed that air may readily enter on one side of the opening and escape with ease on the opposite side of the. opening, the air stream being drawn in through the window opening converging from all directions towards the center of the opening and the air escaping through the opening diverging in all directions, thereby eliminating undesirable air currents.

Another object or this invention is to provide a sectional balile such that upon assembling the baflie and the housing for the window ventilating unit, the two form a composite unit interlocking each other, so as to eliminate the use of fastening means other than the parts per se.

Another object of this invention is to provide transparent bafiie sections so designed that the bafiie sections simulate ornamental glass, al-,

though made from a plastic molding material. Another object ofthis invention is to provide a removably mounted ventilating unit so designed that the unit may be mounted in position either below or above the sliding sash of a double hung type window, Without permanently securingthe ventilating unit in position.

Another object of this invention is-to provide aremovably mounted air circulator'in a window opening for withdrawing air from the room to be cooled.

Other objects and advantages reside in the construction of parts, the combination thereof and the mode of operation, as will become more apparent from the following description. j In the drawings, Y I Figure l'is a perspective viewof the ventilating unit mounted in position in a window opening, onlyfaportion of the "window being shown.

- ure 6.

. '2' Figure 5 is an inside view of the left panel bracket.

Figure 6 is a cross sectional view taken substantially on the line 6-6 of Figure 5, with parts broken away. Figure 7 is an end view of the motor housing and the bracket for supporting the same, Figure 8 is a cross sectional view taken substantially on the line 8-4? of Figure 6, which cross sectional view includes a portion of the ventilating unit that has not been shown in Figure 6. o

Figure 9. is a cross sectional view taken substantially on the line 9-9 of Figure 4.

Figure 10 is a cross sectional view taken substantially on the line |0'-l0 of Figure 4.

Figure 11 is a cross sectional view taken sub stantially'on' the line I l'! I of Figure 4. j

Figure 12 is a fragmentary cross sectional view taken substantially on the line l2|2 of Fig- Figures 3 and 6 to 12 have been drawn to a larger scale than the other figures.

The reference character 29 indicates a sill'of a window frame having a sliding window, 22,

which may be of the double hung type, although Ametallic channel member 24 may be mounted upon the sill 20. Although this channel member has been referred to as a metallic channel member, it may be made of any other suitable material. For some installations, channel member 24 may be loosely positioned upon the sill. In other installations it may be held in position bysuitable clips or screws or in any other suitable manner, depending upon the type of installation and depending in part upon whether the installation is to be permanently secured in position or r'emovably mounted.

The channel member 24 su ports a pair of v bracket-like baffle members 26 and 28. Each .of

these baflle members is provided with vertically disposed ribs '30 used in reinforcing the bafile members and at the same time used in enhancing the appearance of the margins of the bafiie members. These ribs maybe grouped in any suitable manner so as r to, simulate molding. In

, addition to the ribs 30, the bafiie members have Figure 2 is a vertical cross sectional view taken substantially on the line 2-2 of Figure 1.

-,Figure 3 is an inside end elevational view the housing for the ventilating unit.

'Figure; 4 is an inside view of the right panel bra ke "38 and 40;

been provided with transversely disposed rib portions 32. Each of the bracket-like bafile members is provided with an arcuate portion 34 interrupted at spaced intervals by notches 36, The distance between the .notches 38 and 40 is less than the distance between the notches. {it and 38, as will appear more 1 fully later. The notches 36, 38 and 4H .arexbounded When made from transparent material, these bracket,

like members 26 and 28 have the appearance of glass and at the same time have the characteristics of the molding material, which may be flexible and less fragile than glassand more easily molded. For some installations, such as. installations of a permanent type, the bracket-like bafile members may be made from glass. The type of material used is a matter of choice, depending upon the particular installation.

The fan housing includes a plurality of hoops or rings. 50 and a plurality of hoops or rings 52, forming two groups: of hoops or rings. The hoops 50 are tear-drop in cross sectional area and so constructed to form an airfoil for the air currents being drawn into. the housing bythe fan, which will be described'more fully later- The hoops or rings 59. are preferably located on. the

:. inside of the window, so as to be located within the room to be ventilated. The hoops or rings 52 are identical in shape to those used onrthe' inside; but the direction of inclination is reversed.

Each of the rings 50' and 52 is provided with 4 Suitable projections or extensions 54,..there being three pairs of such projections on each side of each ring. The projections. of each pair are preferably more closely spaced than the adjacent projections of adjoining pairs. These pro- --jections are hollow, the apertures through the projections being aligned with each other. Although the projections have been shown as integral with the hoops, these may be separate spacing members. Furthermore, in order to pro vide additional air passage, spacers 56 may be positioned between two or more pairs of rings so as to provide adequate space for air to enter the housing. The hoops are "retained in fixed spaced relation by suitable retaining members or 4 porting member 82, as best seen in Figure '7, is secured to the end ring 60 by means of a pair of brackets 84. The supporting member 82 straddles the internal pocket 10, so that the brackets 84 may be secured to the end ring 50 on either side of the pocket 19. The electric motor 88 is used in drivingthe propeller blades 86 mounted within the housing and preferably so positioned that the blades are located substantially within the opening formed by'the two baffle members .26 and 28.

Directly in front of the fan blades is mounted an air deflecting cone 90. This air deflecting cone 99 is subtended by a concave capping member 92. This capping-member 92 is preferably provided with t caded inserts aligned with the retaining rods or members 94, one of which has been shown in Figure 8, used in holding the hoops 5G and 52, the spacers 54, the spacers 62, the capping member' (ill, the conerfifi and the capping member 92 together as a' unitary structure.

The housing, together with the electric motor and the fan, may be assembled at the factory and shipped to the destination as a composite unit in readiness to be installed. Due to the dimensions of the bracket-like bafiie members 26 and 28, when assembled as shown in Figure 1, 'it results in an awkward, inconvenient assembly when packed for shipping. The bracket-like bafiie members 26 and 28 are therefore preferably shipped disassembled, in that these balile members may be nestled together and shipped in "a comparatively flat, rectangular carton. This ref rods 94, shown in Figure 8,- extending through the apertures in the'projections 54 and secured in 5 position by suitable nuts 58.

A capping or end ring 60, held in spaced relation from the outer ring by means of the spacer 62, cooperates with a grid 64 to provide an end for the housing located on the inside of the room. The end ring 6.0 has a suitable contour so as to present a neat appearance within the room. The end rings may be made from stainless steel, or any other suitable material. The grid 64 may be molded from plastic material or formedfrorn any. other suitable mate rial. By using molding material, very desirable color schemes may be produced. The grid 64 has a blank'space 66 that may be used for supporting-a name plate that hasnot been shown. In'the portion of the end ring located directly below the g'rid' 64 there is formed a provjection, extension or internal pocket H3 that is adapted to receive a speed control box 12, the

details of which have not been shown for the reason that these are. .wellknown tothoseskilled "in the art. This. control box 12 is preferably econtrolled'by a knob or dial 14 mounted on the *{outside of the "projection or extension 10.

Anelectric motor 80, supported upon asapsults in a convenient mode of shipping the ventilator.

When the ventilator is to be assembled in readiness to be mounted in a window opening, the baliie members 26 and 28 are inserted substantially diametricall between the hoops 5t and 52. The projections 54 are seated in the pockets 42, 44 and 45, the pockets being so designed that the pockets are snugly seated upon the projections, as clearly shown in Figure 8. In order to facilitate the insertion of the baflie members, the notches 36 have been provided with a horizontal wall portion 98, so as to provide clearance for the two top projections. This, permits the brackets to be inserted radially from the opposite sides of the housing.

Upon the baiile members 26 and 2% being inserted into position, suitable bolts [36 are inserted through suitable apertures H32 in the overlap ping ends H34 of the bafile members 26' and 28. Thus, it is seen that as far as the'housing and the baffie members are concerned, these may be assembled and attached together by the useof only two bolts Hill. This results in a ventilating unit that is easily assembled. After the bafiie members 25 and 28 have been secured in position upon the housing, the channel member 24 is prefdimensioned that they may be positioned inmost window openings. However, the-window openings are usually widerth-an the maximum width across the baffle members 26 and 28. suitable transparent panel members I20 are mounted on either side of the bafiie members 26 and 28. Mem- 1 bers I20 may be cut to order for some installations. channel members 24 and I I4 are preferably provided with a guide for the edges of the transparent members I20; so that the transparent mem However, for universal adaptability, the

bers I20 may overlap any suitable portion of the bracket-like baflle members 26 and 28, the amount of the overlap depending upon the width of the window; By this arrangement, it is possible to select members 820 from a plurality of such members of varying width, so that members I20'will approximately cover the spaces left vacant on the other side of the battle members 26 and 28.

On the other hand, if the space on eimembers I20 are preferably selected having a width greater than 15%. This may be 16", 17', 18" or any other suitable width, so as to pro- 'vide an overlap, rather than to attempt to attain a precision fit.

, This assembly is readily mounted in any suitable window opening, By connecting the fan to a suitable electric circuit, the fan may be used to with'draw air from a room, such as a bedroom. "Fresh air may then enter the room through suitable'openings, such as other Windows, to ventilate the room Without drafts.

Although the preferred embodiment of the device has been described, it will be understood 'thatwithin the purview of this invention various changes'may be made inthe form, details, proportion and arrangement of parts, the combination thereof and mode of operation, which gen- "erally stated consist in a device capable of carrying out the objects set forth, as disclosed and "defined in the appended claims. Having thus described my invention, I claim:

1.A ventilating fan assembly having a fan drivenby an electric motor, the combination includi-ng a vertically disposed baflle having an air circulating opening therein, a plurality of identical hoops arranged side by-side, some of the hoops being mounted on one side of the baiile and other hoops on the opposite side of the baiiie so that the hoops surround the ian'and the motor, the opening through the hoops registering with the opening in the bafile, means for clamping the hoops and the baflie into a rigid structure, and means for supporting the motor within the", hoops, said means including a ring extendingv over the opening in the end of the hoops, said ring being provided with a motor supporting bracket, so "that the fan circulates air "through the opening in the baffle. v

if 25A ventilating fan assembly having a fan driven by" an electric motor, the combination in- ;cludinga vertically disposed baffle assembly including a center portion having an air circulatiing opening therein, and adjustable portions engaging the center portion for adjusting the size of the baffie, a plurality of identical hoops arranged side by side, the opening through the hoops registering with the opening in the bafile, said hoops surrounding the fan and the motor, means for clamping the hoops and the bafile into a rigid structure, means for supporting the motor within the hoops, said means including a ring provided with a motor supporting bracket upon and a conical member extending across the open- .ing in the hoops with the apex'directed towards so that the hoops surround the fan and the motor,

the opening through the hoops registering with the opening in the bafile, means for clamping the hoops into arigid structure, and means for sunporting the motor within the hoops so that the fan circulates air through the opening in the baflle. z

' 4. A ventilating fan assembly having a fan driven by an electric motor, the combination-including a plurality of identical hoops arranged side by side, a baflle having an air circulating opening therein, said baflle' including sections,

which the motor'is mounted so that the fan circulates air through the opening in the baflie,

two of said sections cooperating to form .said opening, means for holding the sections together,

the body ofthe hoops being inclined, some of the hoops being mounted on one side of the baffle and other hoops on the opposite side of the baffle so that the hoops surround the fan and the motor, the opening through the hoops registering with the opening in the baiile, means for clamping the hoops into a rigid structure, and means for supporting the motor within the hoops so that the fan circulates" air through the opening in, the baille. g

5. A ventilating fan assembly having" a fan driven by an electric motor, the combination including a plurality of identical hoops arranged side by side, a bafile having an air circulating opening therein, said baiile including sections, means for holding the sections together, spacer memberspositioned between the hoops, said sections being providedwith notches in which the spacer members are positioned. some of the hoops being mounted on one side of the baflle and other hoops on the opposite side of the bafile so that the hoops-surround the fan and the motor, the opening through the hoops registering with the opening in the baffle, means for clamping the hoops into a rigid structure, and, means for sup- I porting the motor within the hoops so that the fan circulates air through the opening in the baiile.

6. A ventilating fan assembly having a'fan driven by an electric motor, the combination including a plurality of identical hoops arranged side by side, a baiile having an air circulating opening therein, said bafile including sections, two of said sections cooperating to form said opening, means 'for holding the sections together, some of the hoops being mounted on one side of the bafiie and other hoops on the opposite side of the baflie so that the hoops surround the fan and the motor, the main body of the hoops'having a tear-shaped cross sectional area and being inclined in a direction towards the center of the opening in the baffle, spacer members positioned between the hoops, means for clamping the hoops and the spacer members into a rigid structure, and means for supporting the motor within the hoops so that the fan circulates air through the opening in the baiiie.

7. A ventilating fan assembly having a fan driven by an electric motor, the combination ineluding a plurality'oi identical hoops arranged :side by side, a bafile having an air circulating opening therein, some of the hoops being mounted on one side of the baffle and other hoops on the opposite side of the baffle so that the hoops surround the'fan and the motor, the opening through the hoops registering with the opening in the heme; spacer members positioned between the hoops, an annular ring overlying one end of the enclosure formed by the hoops, means for clamping the hoops the spacer members and said annular ring into a unitary structure, and means jsupported upon the annular ring for mounting the motor within the hoops so that the fan circulates air through the opening in the baffle.

8.'A ventilating fan assembly having a fan driven by an electric motor, the combination including a plurality of identical hoops arranged side by side, a baffie having an air circulating opening therein, some of the hoops being mounted on one side of the baffle and other hoops on the opposite side of the baiile so that the hoops surround the fan and the motor, the opening through the hoops registering with the opening in the baffle, spacer members positioned between the hoops, an annular ring overlying one end 'of the enclosure formed by the hoops, a grid overlying the opening in the center of said annular ring, means for clamping the hoops the spacer members and said annular rin into a unitary structure, and means supported upon the annular ring for-mounting the motor within the hoops so that the iancirculates air through the opening in the baffle.

9. A ventilating fan assembly having a fan driven by an electric motor, the combination including a plurality of identical hoops arranged of the hoops being inclined in a direction towards the center of the opening in the baffle,

,the'opening through the hoops registering with the opening in the baffle, means for clamping r the hoops into'a rigid structure, and means for supporting the motor within the hoops so that the fan circulates air through the opening in the bafiie.

10. In a ventilating assembly having a fan .driven by an electric motor, the combination of a vertically disposed .bafiie member having an air circulating opening, said bafile member having a plurality of recesses in the periphery of the opening, each of the recesses having two walls forming a dihedral angle, with a plurality of identical hoops having apertured bosses, some of the bosses being seated in the recesses so as to support the hoops upon the baflie member,

, and retaining rods extending through the apertures for clamping the hoops into a rigid strucmm, said hoops surrounding the fan: and: the

motor.

11. A ventilating fan assembly havinga'ian driven by an electric motor, the combination including a vertically disposed bafile having an opening, said bafiie having a plurality of recesses in the periphery of the opening, a plurality of identical annular hoops having apertured bosses, said hoops being inclined towards the opening in the baffle, said hoops surrounding the fan and the motor, spacing means for holding the hoops in spaced relation from each other, and retaining rods extending through the apertures for clamping the hoops, some of the hoops having their spacing means nested in the recesses of the bafiie so as to rigidly support the-hoops with respect to the baffle, the inclination of' the hoops causing the air to flow inwardly towards the center of the opening on one side thereof and outwardly upon the opposite side thereof.

12. A ventilating fan assembly having a fan driven by an electric motor, the combination including a vertically disposed baiile having an air circulating opening therein, the periphery of the opening of the baflle being provided with V-shaped portions, a plurality of hoops arranged side by side, there being a plurality of hoops on each side of the bafile, said hoops surrounding the fan and the motor, the opening through the hoops registering with the opening in the baffle, and means for clamping the hoops into a rigid structure, said V-shaped portions of the bafiie engaging some of the hoops so as to rigidly support the hoops upon the baffle.

13. A ventilatin fan assembly having a-fan driven by an-electric motor, the combination including a plurality of identical hoops arranged side by side, said hoops forming a peripheral enclosure for the electric fan and the motor,=a vertically disposedbaflie assembly including --a center portion having an air circulating opening thereinregistering with the opening through the hoops, the margins of the opening through the center portion of the baflle assembly being provided with slot-like portions adapted to engage at least one of the hoops, means for clamping the hoops and the baffle assembly into a rigid structure, and means for supporting the motor within the hoops so that the fan circulates air through the opening in the bafile assembly.

WILLIAM W. WELCH, SR.

REFERENCES CITED The following references are of record inthe file of this patent:

UNITED STATES PATENTS I W elch -a May 18, 1948 

